WO2001015849A1 - Dispositif de decharge-remplissage - Google Patents

Dispositif de decharge-remplissage Download PDF

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Publication number
WO2001015849A1
WO2001015849A1 PCT/JP1999/006834 JP9906834W WO0115849A1 WO 2001015849 A1 WO2001015849 A1 WO 2001015849A1 JP 9906834 W JP9906834 W JP 9906834W WO 0115849 A1 WO0115849 A1 WO 0115849A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode rod
discharge
lead
switching regulator
electrode
Prior art date
Application number
PCT/JP1999/006834
Other languages
English (en)
Japanese (ja)
Inventor
Shoju Aoshima
Original Assignee
Technocoat Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Technocoat Co., Ltd. filed Critical Technocoat Co., Ltd.
Priority to AU15127/00A priority Critical patent/AU1512700A/en
Publication of WO2001015849A1 publication Critical patent/WO2001015849A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects

Definitions

  • the present invention relates to a discharge-type cladding device for welding an electrode rod material to a surface of a metal work by discharging between an electrode rod and a metal work.
  • the inventors have proposed a transformer, a rectifier circuit for rectifying the voltage on the secondary side of the transformer, a current limiting resistor having one end connected to the positive pole of the rectifier circuit, and a positive side connected to the other end of the current limiting resistor.
  • the capacitor whose negative side is connected to the negative pole of the rectifier circuit, the electrode rod to which vibration or rotation around the axis is applied by the drive mechanism, and the base end of the cable whose tip is connected to the electrode rod and the positive side of the capacitor. It has an SCR circuit that connects and disconnects periodically, and an earth cable that connects the negative side of the capacitor and the metal work.
  • the electrode rod is brought close to the repaired surface of the metal work, and is generated between the two.
  • An application has been made (JP-A-6-269939) to manufacture a discharge-type cladding device for welding an electrode rod to a surface to be repaired by spark discharge.
  • the amount of electricity Q stored in the capacitor is determined by the capacitance of the capacitor CX and the terminal voltage V of the capacitor. However, the terminal voltage V was changed by changing the number of capacitors to be connected to increase or decrease the capacitance c of the capacitor, or by switching the number of turns of the transformer using a switch relay or the like.
  • the contacts may be degraded or the components of the rectifier circuit may be damaged.
  • a first object of the present invention is to provide a discharge-type cladding apparatus capable of easily adjusting a discharge output.
  • a second object of the present invention is to provide a discharge-type cladding apparatus capable of continuously performing cladding work. Disclosure of the invention
  • the present invention has the following features to attain the object mentioned above.
  • the discharge cladding device is connected to the subsequent stage of the rectifier circuit and has a switching regulator whose DC output voltage can be varied from tens of volts to hundreds of volts, and one of the output terminals of the switching regulator. And a capacitor having one end connected to the other end of the current limiting resistor and the other end connected to the other output terminal of the switching regulator. Is connected to the lead side of the capacitor through a cable, and the drive mechanism applies vibration and rotation around the axis. An electrode rod, and a grounding cable connecting the lead side of the negatively charged capacitor and the metal work. The electrode is brought close to the repaired surface of the metal work. The electrode bar is welded to the repaired surface by spark discharge generated between the electrodes.
  • the discharge-type cladding device is connected to the subsequent stage of the rectifier circuit and has a switching regulator whose DC output voltage can be varied from tens of volts to hundreds of volts, and one of the output terminals of the switching regulator.
  • a current limiting resistor having one end connected to the other end, a capacitor having one end connected to the other end of the current limiting resistor, and the other end connected to the other output electrode of the switching regulator, and a driving mechanism.
  • a disconnection circuit that periodically connects and disconnects an electrode rod to which vibration and rotation around an axis are imparted, and a base end of a cable having a tip connected to the electrode rod and a lead side of a positively charged capacitor. And a ground cable for connecting the lead side of the negatively charged capacitor and the metal work, and the electrode rod is brought close to the repaired surface of the metal work, and is generated between the two.
  • the discharge cladding device is connected to the subsequent stage of the rectifier circuit and has a switching regulator whose DC output voltage can be varied from tens of volts to hundreds of volts, and one of the output terminals of the switching regulator.
  • a plurality of current limiting resistors each having one end connected to the other end, each one lead being connected to each other end of the current limiting resistor, and each other lead being connected to the other output electrode of the switching regulator.
  • a plurality of condensers, an electrode rod to which vibration and rotation around an axis are given by a driving mechanism, and a plurality of condensers to be charged positively with the base end of a cable having a tip connected to the electrode rod.
  • a disconnection circuit that sequentially connects and disconnects the lead side, and a negatively charged capacitor
  • a ground cable for connecting the lead side of the metal work to the metal work, the electrode rod being brought close to the surface to be repaired of the metal work, and the surface to be repaired by a spark discharge generated between the two.
  • the electrode rod is welded to the electrode.
  • the switching regulator whose DC output voltage can be varied from tens of volts to hundreds of volts, is connected downstream of the rectifier circuit and steps down or boosts the rectified voltage.
  • the capacitor is charged via a current limiting resistor.
  • the electrode rod Becomes a positive potential.
  • the drive mechanism applies vibration and rotation around the axis to the electrode bar to prevent the electrode bar from being fused with the metal peak.
  • the switching regulator whose DC output voltage can be varied from several tens of volts to several hundred volts, is connected to the subsequent stage of the rectifier circuit and reduces or boosts the rectified voltage.
  • the capacitor is charged via a current limiting resistor.
  • the lead side of the negatively charged capacitor and the metal work are electrically connected by an earth cable, and the lead side of the positively charged capacitor and the electrode are connected by a cable via a disconnection circuit.
  • the electrode rod has a positive potential.
  • the charged charge of the capacitor is not applied to the electrode rod at one time. Is applied intermittently.
  • the switching regulator whose DC output voltage can be varied from several tens of volts to several hundred volts, is connected to the subsequent stage of the rectifier circuit and reduces or boosts the rectified voltage.
  • Each capacitor is charged via each current limiting resistor.
  • the lead side of each negatively charged capacitor and the metal work are electrically connected by a ground cable, and the lead side of each positively charged capacitor and the electrode rod are connected by a cable via a disconnection circuit. Since they are connected, the electrode rod has a positive potential.
  • the drive mechanism applies vibration and rotation around the axis to the electrode rod to prevent the electrode rod and the metal work from being fused.
  • a disconnection circuit is provided to periodically connect and disconnect the base end of the cable with the tip connected to the electrode rod and the lead side of each positively charged capacitor. Applied to the rod. The capacitor that has released the charge is charged by the next discharge time. Electric charges accumulate.
  • the discharge-type cladding device has a DC output voltage over the switching regulation.
  • the discharge output can be easily increased or decreased, and the overlay work can be performed efficiently.
  • the DC output voltage is increased, a large amount of charge is charged in the capacitor, and the discharge output increases.
  • a disconnection circuit is provided to periodically disconnect the base end of the cable connected to the cable and the lead side of the positively charged capacitor.
  • the charge of the condenser is intermittently applied to the electrode rod, so that the sustainability of the spark discharge is improved and the build-up work can be performed efficiently.
  • the current limiting resistor and the capacitor that stores the charge are one set, the charge will be stored if the capacitor loses the charge due to spark discharge. In the meantime, the discharge output decreases, and the build-up work capability decreases.
  • FIG. 1 is a block diagram of a discharge type cladding apparatus according to one embodiment of the present invention.
  • FIG. 2 is an electric circuit diagram of a rectifier circuit of the discharge cladding device.
  • FIG. 3 is an electric circuit diagram of the discharge cladding apparatus in the switching mode.
  • FIG. 4 is an electric circuit diagram of a connection / disconnection circuit of the discharge type cladding apparatus.
  • FIG. 5 is a waveform diagram showing the relationship between the elapsed time and the terminal voltage of each capacitor.
  • FIG. 6 is an explanatory view showing a working state of the discharge-type cladding apparatus according to one embodiment of the present invention.
  • Fig. 7 is an explanatory diagram of the structure of Apliquet.
  • FIG. 8 is a repair process chart of an injection molding die by an electric discharge type overlaying apparatus according to one embodiment of the present invention.
  • FIG. 9 is a perspective view showing a second embodiment of the application application.
  • FIG. 10 is a perspective view showing a third embodiment of the application application.
  • the discharge type cladding device A is composed of a main unit a with a rectifier circuit 1, a switching regulator 2 , a current limiting resistor 3, a capacitor 4, and a disconnection circuit 5, and a An electrode rod 6 which is mounted on and rotates and an earth cable 8 connected to a work 7 are provided.
  • the rectifier circuit 1 has a noise filter 11, a diode bridge 12, a smoothing capacitor 13, 14 and a jumper terminal 15 for input switching. , 16 and so on.
  • the AC power supply 10 is a single-phase 100 V system (70 V to 110 V)
  • the jumper terminals 15 and 16 are jumpered, and the diode bridge 1 2 performs full-wave voltage rectification on AC 100 V.
  • the AC power supply 10 is a single-phase 200 V system (200 V to 260 V)
  • the jumper terminal 15 and the jumper terminal 16 are not jumpered.
  • Diodes 12 1 and 12 2 of bridge 12 perform full-wave rectification of 200 V AC.
  • the switching regulator 2 is a switch. Voltage data of the rectified voltage V on the secondary side of the switching transformer 21 is transmitted to the FET drive circuit 23 via the photocoupler 22, and the MOSFET 24 of the MOS type outputs the primary current of the switching transformer 21. Chopper is performed, and the rectified voltage V is maintained at the voltage set by the variable resistor 25.
  • the rectified voltage V can be set in the range of 40 V to 160 V by operating the variable resistor 25.
  • the current limiting resistor 3 (20 ⁇ / 2) is used to limit the charging current flowing to the capacitors 4 and 4.One end 3 1 and 3 1 are switched. And the other end 32, 32 is connected to the positive lead 41, 41 of the capacitor 4, 4.
  • Capacitors 4 and 4 (10 x F x l O, 250 V) connect the negative lead 42 to the negative terminal 27 of the switching regulator 2.
  • the disconnection circuit 5 includes SCRs 51, 51, an oscillation circuit 52, and an FZF circuit 53.
  • the SCRs 5 1 and 5 1 connect the anodes 5 1 1 and 5 1 1 to the positive leads 4 1 and 4 1 of the capacitors 4 and 4 and connect the output terminals 6 0 that go through the base of the cable 6 1.
  • 5 12 and 5 12 are connected.
  • the oscillation circuit 52 is a circuit that oscillates a pulse having a cycle set by the variable resistor 52 1.
  • the F / F circuit 5 3 based on the pulse oscillation circuit 5 2 sends out a pulse G> alternately to SCR 5 1, 5 1 As shown in FIG. 5, and outputs a G 2, anodic 5 1 1 - Turn on alternately between force nodes 5 1 and 2.
  • Electrode 6 (outer diameter 0.5 to 10 mm) is made of conductive material such as all iron-based alloys, aluminum alloys, copper alloys, noble metals, or rare metals, and their carbides, nitrides, borides, or other It rotates at a predetermined speed (10-10000 rpm) according to the mode within the application b.
  • the applicator b uses a gun-type electric hand drill, and has a cylindrical main body 901, and a gripper 902 projecting below its rear end. Having a housing 9.
  • a rotating switch 90 for supplying AC to the motor 905 is provided on the front surface of the gripper 902, and the main body 901 is provided with the motor 905 inside.
  • An output shaft 906 electrically connected to the cable 61 is rotatably mounted.
  • a chuck 907 containing the electrode rod 6 is attached to the tip of the output shaft 906 so as to protrude from the main body.
  • the tip of the gun-type electric hand drill (the part that covers the output shaft 906) is removed, and instead of the removed tip, the tip side of the output shaft 906 is used.
  • a resin sleeve 908 enclosing the part is externally fitted.
  • the sleeve 908 (the end of the housing 903) is fitted with a cover cylinder 910 that wraps the chuck 907 and guides the argon gas discharged from the gas hose 909. ing.
  • An axial slit 911 is formed on the insulating sleeve 908, and a brush 911 connected to the cable 61 is slid on the output shaft 906 on the slit 911. It is fitted in contact. Further, a peripheral groove 913 intersecting with the slit 911 is formed on the outer periphery of the sleeve 908. A coil spring 913a for pressing the brush 912 against the output shaft 906 is fitted into 913.
  • a through-hole 914 is formed in the sleeve 908 in parallel with the slit 911 to provide an argon gas passage.
  • the cover cylinder 910 fits tightly on the sleeve 908, and has a large-diameter body 915 that fits loosely around the outer periphery of the chuck 907, and a tapered portion 9 provided at the tip end thereof. 16 and a small diameter portion 917 protruding from the tip of the tapered portion 916.
  • An insertion hole for a fastener for fastening the chuck 907 is formed in the small-diameter portion 917, and a funnel-shaped cap 918 made of resin is detachably fitted to the outside.
  • the funnel cap 918 is attached so that the electrode rod 6 can be easily attached and detached, and that argon gas flows intensively along the electrode rod 6.
  • the through-hole 914 connected to the gas hose 909 has an outlet 911 opened at the end of the sleeve 908 to form a gas flow path to the inside of the cover ⁇ 910. Blow out argon gas from the end of 9 18.
  • An insulator tube 920 (insulator) is inserted into the funnel cap 918, and the base 921 of the insulator tube 920 is fixed to the tip. Note that a glass fiber tube may be used instead of the insulator tube 920.
  • the applicator e shown in Fig. 10 uses an electrode rod 6 with a diameter of 5 mm or less, and uses a small cylindrical electric drill.
  • the work 7 includes all conductors in addition to molds and rolls manufactured by SKD61, S50C, and the like.
  • the ground cable 8 is a covering wire for electrically connecting the minus terminal 50 of the disconnection circuit 5 and the work 7, and has a work gripping tool 81, which is sandwiched between the work 7, attached to the end.
  • the power switch 100 After setting the position of the knob of the variable resistor 25 (40 V to 160 V) so that an output suitable for the work 7 (determined from the contained metal component) is obtained, the power switch 100 Turn the gas release knob 931 of the argon gas cylinder 930 to bring the tip of the electrode rod 6 close to the repaired surface 71 of the metal work 7 and press the rotary switch 904. .
  • the electrode rod 6 rotates at a predetermined rotation speed, and the SCRs 5 1 and 5 1 of the disconnection circuit 5 alternately repeat the disconnection, so that the charged charges of the capacitors 4 and 4 are charged. Is applied to the electrode rod 6 without interruption
  • gas cylinder 930 ⁇ gas discharge knob 9 3 1 ...
  • gas hose 9 0 9 ⁇ through hole 9 1 4 ⁇ outlet 9 1 9 ⁇ cover cylinder 9 1 0 ⁇ funnel cap 9 1 8 Is blown out from the end of the funnel-shaped cap 918 and flows along the electrode rod 6.
  • a spark discharge is generated between the electrode rod 6 and the work 7, and the spark discharge melts the electrode rod material of the electrode rod 6 having a positive potential, thereby causing zero electric current.
  • the electrode rod material is welded to the repaired surface 71 of the work 7 in a shielded atmosphere of argon gas.
  • Welding is performed by charging the molten electrode bar to a positive potential, attracting it to the surface of the zero-potential metal workpiece 7, and colliding with the surface 71 to be repaired. Is spread under the surface of the work to maintain the adhesion, and then the electrode rod material is successively deposited to form a build-up layer.
  • the electrode rod 6 since the electrode rod 6 is rotating, it is possible to prevent the tip of the electrode rod 6 from being fused to the surface of the metal work 7 so that the work can be performed smoothly and the electrode material formed can be formed.
  • the layer is uniform and the surface is smooth.
  • the workability of the overlaying work is high when the rotation speed of the electrode rod 6 is in the range of 10 rpm to 100 rpm.
  • FIG. 8 shows a process of repairing a resin injection molding die by the discharge-type cladding apparatus A.
  • the electrode rod 6 is rotated and the electrode rod material is welded to the surface to be repaired 721 in an atmosphere of argon gas, and the surface to be repaired 721 of the mold 72 is overlaid.
  • variable resistance 25 is adjusted to increase or decrease the discharge output in a stepless manner so that a desired discharge output can be obtained, so that the cladding work can be performed efficiently.
  • [I] Prepare two sets of current limiting resistor 3, capacitor 4 for storing charge, and SCR 51.
  • SCR 51 alternately connects and disconnects the base end of cable 61 and the positive lead of capacitor 4. With this configuration, the charged charge is applied to the electrode rod 6 from the capacitor 4 on the fully charged side. For this reason, the build-up work can be performed continuously, and the discharge-type build-up apparatus A is excellent in work efficiency.
  • Discharge type cladding device A does not change the number of connected capacitors or switch the number of turns of the transformer, but increases or decreases the discharge output by changing the rectifying voltage V with a variable resistor 25. With this configuration, even if the discharge output is increased or decreased during the work, damage to components such as the rectifier circuit does not occur. Therefore, the discharge-type cladding apparatus A can increase or decrease the discharge output during the cladding work, and is convenient.
  • Discharge-type overlayer A is compact and lightweight because it does not use a power transformer, and is easy to carry and easy to use.
  • the switching transformer 21 switches at a relatively high frequency, so that the switching transformer 21 is small and light.
  • Discharge-type cladding apparatus A is equipped with jumper terminals 15 and 16 for input switching and switching regulator 2 so that the country where AC power supply 10 has a low voltage (70 V) But even in high countries (260 V) Can be.
  • the present invention includes the following embodiments in addition to the above embodiments.
  • the current limiting resistor 3, the capacitor 4 for storing the charged electric charge, and the SCR 51 may be one set, and have the effects of the above [A], [U], [E], and [O]. Correspondence) .
  • Three or more sets of the current limiting resistor 3, the capacitor 4 for storing the charged electric charge, and the SCR 51 may provide the effects of the above [A] to [O] and increase the effect of the above [I]. (Corresponds to item 3).
  • the disconnection circuit 5 may be omitted, and the effects [a], [u], [e], and [o] are achieved (corresponding to claim 1).
  • the type of shield gas is preferably an inert gas, but need not be used.
  • the applicators b, d, and e are vibrated or rotated by electric power.
  • a configuration in which vibration or rotation is applied by pneumatic pressure is acceptable.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Generation Of Surge Voltage And Current (AREA)

Abstract

L'invention concerne un dispositif de décharge-remplissage qui dépose un matériau d'électrode sur la surface d'une pièce métallique par décharge électrique entre l'électrode et la pièce métallique. Le dispositif de décharge-remplissage peut facilement réguler la décharge électrique. Ce dispositif (A) comporte un corps (a) comprenant un circuit de redressement (1), un régulateur de commutation (2) destiné à produire une tension de sortie de courant continu variable, une résistance limitant le courant (3), un condensateur (4), un disjoncteur (5), une barre d'électrodes rotative (6) fixée à un applicateur et un fil de masse relié à la pièce. L'électrode est rapprochée de la pièce de sorte qu'une étincelle puisse se produire afin de déposer le matériau d'électrode fondu sur un défaut à combler.
PCT/JP1999/006834 1999-08-30 1999-12-06 Dispositif de decharge-remplissage WO2001015849A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU15127/00A AU1512700A (en) 1999-08-30 1999-12-06 Discharge-padding device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP24364699 1999-08-30
JP11/243646 1999-08-30

Publications (1)

Publication Number Publication Date
WO2001015849A1 true WO2001015849A1 (fr) 2001-03-08

Family

ID=17106925

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1999/006834 WO2001015849A1 (fr) 1999-08-30 1999-12-06 Dispositif de decharge-remplissage

Country Status (2)

Country Link
AU (1) AU1512700A (fr)
WO (1) WO2001015849A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5822218B1 (ja) * 2014-10-27 2015-11-24 テクノコート株式会社 放電被覆方法及び放電被覆装置
RU2778132C1 (ru) * 2022-03-29 2022-08-15 Акционерное общество "Интер РАО - Электрогенерация" Устройство для электроискрового формирования покрытий с вращающимся электродом

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4824625B1 (fr) * 1969-12-26 1973-07-23
JPH0475779A (ja) * 1990-07-13 1992-03-10 Toppan Printing Co Ltd アーク溶接システム

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4824625B1 (fr) * 1969-12-26 1973-07-23
JPH0475779A (ja) * 1990-07-13 1992-03-10 Toppan Printing Co Ltd アーク溶接システム

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5822218B1 (ja) * 2014-10-27 2015-11-24 テクノコート株式会社 放電被覆方法及び放電被覆装置
CN105537724A (zh) * 2014-10-27 2016-05-04 拓克能株式会社 放电被覆方法以及放电被覆装置
CN105537724B (zh) * 2014-10-27 2018-06-01 拓克能株式会社 放电被覆方法以及放电被覆装置
RU2778132C1 (ru) * 2022-03-29 2022-08-15 Акционерное общество "Интер РАО - Электрогенерация" Устройство для электроискрового формирования покрытий с вращающимся электродом
RU2809895C1 (ru) * 2023-10-30 2023-12-19 Акционерное общество "Интер РАО - Электрогенерация" Устройство для электроискрового формирования покрытий с вращающимся электродом и гибким валом

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Publication number Publication date
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